Australia Was Once Home to Hundreds of Ancient Volcanoes. We May Finally Know Why – ScienceAlert

Geologically speaking, Australia is a relatively quiet place to live. Earthquakes are rare and typically gentle, and as for volcanoes, there hasn’t been as much as a burp of magma on the mainland in thousands of years.
It wasn’t always this way. In fact, the land is littered with the remains of mysterious eruptions that shattered the crust with surprising regularity over the past 80 million years.
A new study suggests some of the more unusual periods of activity were the result of an ancient seafloor…

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